Karina Guardado wrote:
Hello,
I would like to know if there is support for Surface, Curve, TIN,
Triangle, PolyedralSurface and LinearRing in Postgis.
Karina,
I believe that there is not. Normally Surface, and Curve are
uninstantiatable geometry classes (they only exist to relate
particular concrete geometry types). So there is an SQL-MM
CIRCULARSTRING, COMPOUNDCURVE, CURVEPOLYGON, MULTICURVE and
MULTISURFACE, but no general curve or surface. This may be
of help:
http://postgis.refractions.net/docs/ch04.html#id2591274
I do not believe there is any support for the SF 1.2 PolyhedralSurface
or TIN types. LinearRing is also not a concrete type as I understand
it, but only exists as a conceptual name for a ring in a polygon. But
it is not a first class object that can stand on it's own though of
course we have the LineString.
Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, [EMAIL PROTECTED]
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | President OSGeo, http://osgeo.org
_______________________________________________
postgis-users mailing list
[email protected]
http://postgis.refractions.net/mailman/listinfo/postgis-users
